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uart: barebones uart module added.

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* Only defined call is the init. Will then expose the uart from
* the multiplexors.

Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
This commit is contained in:
Thomas Ingleby
2014-07-10 00:55:50 +01:00
parent 86af05f803
commit 23304fb6c4
7 changed files with 167 additions and 1 deletions
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29
src/mraa.c
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@@ -453,3 +453,32 @@ mraa_adc_supported_bits()
return plat->adc_supported;
}
mraa_result_t
mraa_setup_uart(int index)
{
if (plat == NULL)
return MRAA_ERROR_PLATFORM_NOT_INITIALISED;
if (plat->uart_dev_count == 0)
return MRAA_ERROR_FEATURE_NOT_SUPPORTED;
if (plat->uart_dev_count <= index)
return MRAA_ERROR_NO_RESOURCES;
int pos = plat->uart_dev[index].rx;
if (pos >= 0) {
if (plat->pins[pos].uart.mux_total > 0)
if (mraa_setup_mux_mapped(plat->pins[pos].uart) != MRAA_SUCCESS)
return MRAA_ERROR_INVALID_RESOURCE;
}
if (pos >= 0) {
pos = plat->uart_dev[index].tx;
if (plat->pins[pos].uart.mux_total > 0)
if (mraa_setup_mux_mapped(plat->pins[pos].uart) != MRAA_SUCCESS)
return MRAA_ERROR_INVALID_RESOURCE;
}
return MRAA_SUCCESS;
}